Fix queue loading, null-safe models, autofill, and add outbound dialer

- Fix queue queries in mobile API and SSE to use twp_group_members
  (matching browser phone) instead of twp_queue_assignments
- Auto-create personal queues if user has no extension
- Make all model JSON parsing null-safe (handle null, string ints, bools)
- Add AutofillGroup and autofill hints to login form
- Add outbound calling with dialpad bottom sheet on dashboard

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

mobile/lib/models/agent_status.dart

@@ -17,11 +17,11 @@ class AgentStatus {
 
   factory AgentStatus.fromJson(Map<String, dynamic> json) {
     return AgentStatus(
-      status: _parseStatus(json['status'] as String),
-      isLoggedIn: json['is_logged_in'] as bool,
+      status: _parseStatus((json['status'] ?? 'offline') as String),
+      isLoggedIn: json['is_logged_in'] == true || json['is_logged_in'] == 1 || json['is_logged_in'] == '1',
       currentCallSid: json['current_call_sid'] as String?,
       lastActivity: json['last_activity'] as String?,
-      availableForQueues: json['available_for_queues'] as bool? ?? true,
+      availableForQueues: json['available_for_queues'] != false && json['available_for_queues'] != 0 && json['available_for_queues'] != '0',
     );
   }
 

mobile/lib/models/queue_state.dart

@@ -15,13 +15,19 @@ class QueueInfo {
 
   factory QueueInfo.fromJson(Map<String, dynamic> json) {
     return QueueInfo(
-      id: json['id'] as int,
-      name: json['name'] as String,
-      type: json['type'] as String,
+      id: _toInt(json['id']),
+      name: (json['name'] ?? '') as String,
+      type: (json['type'] ?? '') as String,
       extension: json['extension'] as String?,
-      waitingCount: json['waiting_count'] as int,
+      waitingCount: _toInt(json['waiting_count']),
     );
   }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
 }
 
 class QueueCall {
@@ -43,12 +49,18 @@ class QueueCall {
 
   factory QueueCall.fromJson(Map<String, dynamic> json) {
     return QueueCall(
-      callSid: json['call_sid'] as String,
-      fromNumber: json['from_number'] as String,
-      toNumber: json['to_number'] as String,
-      position: json['position'] as int,
-      status: json['status'] as String,
-      waitTime: json['wait_time'] as int,
+      callSid: (json['call_sid'] ?? '') as String,
+      fromNumber: (json['from_number'] ?? '') as String,
+      toNumber: (json['to_number'] ?? '') as String,
+      position: _toInt(json['position']),
+      status: (json['status'] ?? '') as String,
+      waitTime: _toInt(json['wait_time']),
     );
   }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
 }

mobile/lib/models/user.dart

@@ -13,10 +13,16 @@ class User {
 
   factory User.fromJson(Map<String, dynamic> json) {
     return User(
-      id: json['user_id'] as int,
-      login: json['user_login'] as String,
-      displayName: json['display_name'] as String,
+      id: _toInt(json['user_id']),
+      login: (json['user_login'] ?? '') as String,
+      displayName: (json['display_name'] ?? '') as String,
       email: json['email'] as String?,
     );
   }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
 }